Mega Code Archive
Scrolling Data Binding
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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Configuration;
using System.Data.SqlClient;
public class Form1 : Form {
public Form1() {
InitializeComponent();
}
private void retrieve_Click(object sender, EventArgs e) {
retrieve.Enabled = false;
ds = CreateDataSet();
textName.DataBindings.Add("Text", ds, "Products.ProductName");
textQuan.DataBindings.Add("Text", ds, "Products.QuantityPerUnit");
trackBar.Minimum = 0;
trackBar.Maximum = this.BindingContext[ds, "Products"].Count - 1;
textName.Enabled = true;
textQuan.Enabled = true;
trackBar.Enabled = true;
}
private DataSet CreateDataSet() {
string customers = "SELECT * FROM Products";
DataSet ds = new DataSet();
using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["northwind"].ConnectionString)) {
SqlDataAdapter da = new SqlDataAdapter(customers, con);
da.Fill(ds, "Products");
}
return ds;
}
private void trackBar_Scroll(object sender, EventArgs e) {
this.BindingContext[ds, "Products"].Position = trackBar.Value;
}
private DataSet ds;
private void InitializeComponent() {
this.retrieve = new System.Windows.Forms.Button();
this.textName = new System.Windows.Forms.TextBox();
this.textQuan = new System.Windows.Forms.TextBox();
this.trackBar = new System.Windows.Forms.TrackBar();
((System.ComponentModel.ISupportInitialize)(this.trackBar)).BeginInit();
this.SuspendLayout();
this.retrieve.Location = new System.Drawing.Point(12, 12);
this.retrieve.Size = new System.Drawing.Size(75, 23);
this.retrieve.Text = "Retrieve";
this.retrieve.UseVisualStyleBackColor = true;
this.retrieve.Click += new System.EventHandler(this.retrieve_Click);
this.textName.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.textName.Enabled = false;
this.textName.Location = new System.Drawing.Point(12, 42);
this.textName.Size = new System.Drawing.Size(268, 20);
this.textQuan.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.textQuan.Enabled = false;
this.textQuan.Location = new System.Drawing.Point(13, 69);
this.textQuan.Size = new System.Drawing.Size(267, 20);
this.trackBar.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.trackBar.Enabled = false;
this.trackBar.Location = new System.Drawing.Point(13, 96);
this.trackBar.Size = new System.Drawing.Size(267, 45);
this.trackBar.Scroll += new System.EventHandler(this.trackBar_Scroll);
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(292, 148);
this.Controls.Add(this.trackBar);
this.Controls.Add(this.textQuan);
this.Controls.Add(this.textName);
this.Controls.Add(this.retrieve);
this.Name = "Form1";
this.Text = "ScrollingDataBinding";
((System.ComponentModel.ISupportInitialize)(this.trackBar)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
private System.Windows.Forms.Button retrieve;
private System.Windows.Forms.TextBox textName;
private System.Windows.Forms.TextBox textQuan;
private System.Windows.Forms.TrackBar trackBar;
[STAThread]
static void Main() {
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
}
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